32812121 has 2 divisors, whose sum is σ = 32812122. Its totient is φ = 32812120.

The previous prime is 32812067. The next prime is 32812133. The reversal of 32812121 is 12121823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30680521 + 2131600 = 5539^2 + 1460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32812121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32812093 and 32812102.

It is not a weakly prime, because it can be changed into another prime (32812181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16406060 + 16406061.

It is an arithmetic number, because the mean of its divisors is an integer number (16406061).

Almost surely, 2^32812121 is an apocalyptic number.

It is an amenable number.

32812121 is a deficient number, since it is larger than the sum of its proper divisors (1).

32812121 is an equidigital number, since it uses as much as digits as its factorization.

32812121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 32812121 is about 5728.1865367671. The cubic root of 32812121 is about 320.1435586339.

Adding to 32812121 its reverse (12121823), we get a palindrome (44933944).

The spelling of 32812121 in words is "thirty-two million, eight hundred twelve thousand, one hundred twenty-one".